<template>
  <j-modal
    centered
    :title="name + '选择'"
    :width="width"
    :visible="visible"
    switchFullscreen
    @ok="handleOk"
    @cancel="close"
    cancelText="关闭"
  >
    <a-row :gutter="18">
      <a-col :span="16">
        <!-- 查询区域 -->
        <a-form layout="inline" class="j-inline-form">
          <!-- 固定条件 -->
          <a-form-item :label="queryParamText || name">
            <a-input
              :maxLength="30"
              v-model="queryParam[queryParamCode || valueKey]"
              :placeholder="'请输入' + (queryParamText || name)"
              @pressEnter="searchQuery"
            />
          </a-form-item>
          <!-- 动态生成的查询条件 -->
          <j-select-biz-query-item
            v-if="queryConfig.length > 0"
            v-show="showMoreQueryItems"
            :queryParam="queryParam"
            :queryConfig="queryConfig"
            @pressEnter="searchQuery"
          />
          <!-- 按钮 -->
          <a-button type="primary" @click="searchQuery" icon="search">查询</a-button>
          <a-button type="primary" @click="searchReset" icon="reload" style="margin-left: 8px">重置</a-button>
          <a v-if="queryConfig.length > 0" @click="showMoreQueryItems = !showMoreQueryItems" style="margin-left: 8px">
            {{ showMoreQueryItems ? '收起' : '展开' }}
            <a-icon :type="showMoreQueryItems ? 'up' : 'down'" />
          </a>
        </a-form>

        <a-table
          size="middle"
          bordered
          :rowKey="rowKey"
          :columns="innerColumns"
          :dataSource="dataSource"
          :pagination="ipagination"
          :loading="loading"
          :scroll="{ y: 240 }"
          :rowSelection="{ selectedRowKeys, onChange: onSelectChange, type: multiple ? 'checkbox' : 'radio' }"
          :customRow="customRowFn"
          @change="handleTableChange"
        >
        </a-table>
      </a-col>
      <a-col :span="8">
        <a-card :title="'已选' + name" :bordered="false" :head-style="{ padding: 0 }" :body-style="{ padding: 0 }">
          <a-table size="middle" :rowKey="rowKey" bordered v-bind="selectedTable">
            <span slot="action" slot-scope="text, record, index">
              <a @click="handleDeleteSelected(record, index)">删除</a>
            </span>
          </a-table>
        </a-card>
      </a-col>
    </a-row>
  </j-modal>
</template>

<script>
import { getAction } from '@/api/manage'
import Ellipsis from '@/components/Ellipsis'
import { JeecgListMixin } from '@/mixins/JeecgListMixin'
import { pushIfNotExist } from '@/utils/util'
import JSelectBizQueryItem from './JSelectBizQueryItem'
import { cloneDeep } from 'lodash'

export default {
  name: 'JSelectBizComponentModal',
  mixins: [JeecgListMixin],
  components: { Ellipsis, JSelectBizQueryItem },
  props: {
    value: {
      type: Array,
      default: () => [],
    },
    visible: {
      type: Boolean,
      default: false,
    },
    valueKey: {
      type: String,
      required: true,
    },
    multiple: {
      type: Boolean,
      default: true,
    },
    width: {
      type: Number,
      default: 900,
    },

    name: {
      type: String,
      default: '',
    },
    listUrl: {
      type: String,
      required: true,
      default: '',
    },
    // 根据 value 获取显示文本的地址，例如存的是 username，可以通过该地址获取到 realname
    valueUrl: {
      type: String,
      default: '',
    },
    displayKey: {
      type: String,
      default: null,
    },
    columns: {
      type: Array,
      required: true,
      default: () => [],
    },
    // 查询条件Code
    queryParamCode: {
      type: String,
      default: null,
    },
    // 查询条件文字
    queryParamText: {
      type: String,
      default: null,
    },
    // 查询配置
    queryConfig: {
      type: Array,
      default: () => [],
    },
    rowKey: {
      type: String,
      default: 'id',
    },
    // 过长裁剪长度，设置为 -1 代表不裁剪
    ellipsisLength: {
      type: Number,
      default: 12,
    },
  },
  data() {
    return {
      innerValue: [],
      // 已选择列表
      selectedTable: {
        pagination: false,
        scroll: { y: 240 },
        columns: [
          {
            ...this.columns[0],
            width: this.columns[0].widthRight || this.columns[0].width,
          },
          { title: '操作', dataIndex: 'action', align: 'center', width: 60, scopedSlots: { customRender: 'action' } },
        ],
        dataSource: [],
      },
      renderEllipsis: (value) => <ellipsis length={this.ellipsisLength}>{value}</ellipsis>,
      url: { list: this.listUrl },
      /* 分页参数 */
      ipagination: {
        current: 1,
        pageSize: 5,
        pageSizeOptions: ['5', '10', '20', '30'],
        showTotal: (total, range) => {
          return range[0] + '-' + range[1] + ' 共' + total + '条'
        },
        showQuickJumper: true,
        showSizeChanger: true,
        total: 0,
      },
      options: [],
      dataSourceMap: {},
      showMoreQueryItems: false,
    }
  },
  computed: {
    // 表头
    innerColumns() {
      let columns = cloneDeep(this.columns)
      columns.forEach((column) => {
        // 给所有的列加上过长裁剪
        if (this.ellipsisLength !== -1) {
          // JSelectBizComponent columns 建议开放customRender等方法类配置
          // https://github.com/jeecgboot/jeecg-boot/issues/3203
          let myCustomRender = column.customRender
          column.customRender = (text, record, index) => {
            let value = text
            if (typeof myCustomRender === 'function') {
              // noinspection JSVoidFunctionReturnValueUsed
              value = myCustomRender(text, record, index)
            }
            if (typeof value === 'string') {
              return this.renderEllipsis(value)
            }
            return value
          }
        }
      })
      return columns
    },
  },
  watch: {
    value: {
      deep: true,
      immediate: true,
      handler(val) {
        this.innerValue = cloneDeep(val)
        this.selectedRowKeys = []
        this.valueWatchHandler(val)
        this.queryOptionsByValue(val)
      },
    },
    dataSource: {
      deep: true,
      handler(val) {
        this.emitOptions(val)
        this.valueWatchHandler(this.innerValue)
      },
    },
    selectedRowKeys: {
      immediate: true,
      deep: true,
      handler(val) {
        //update--begin--autor:scott-----date:20200927------for：选取职务名称出现全选 #1753-----
        if (this.innerValue) {
          this.innerValue.length = 0
        }
        //update--end--autor:scott-----date:20200927------for：选取职务名称出现全选 #1753-----
        this.selectedTable.dataSource = val.map((key) => {
          for (let data of this.dataSource) {
            if (data[this.rowKey] === key) {
              pushIfNotExist(this.innerValue, data[this.valueKey])
              return data
            }
          }
          for (let data of this.selectedTable.dataSource) {
            if (data[this.rowKey] === key) {
              pushIfNotExist(this.innerValue, data[this.valueKey])
              return data
            }
          }
          console.warn('未找到选择的行信息，key：' + key)
          return {}
        })
      },
    },
  },

  methods: {
    /** 关闭弹窗 */
    close() {
      this.$emit('update:visible', false)
    },

    valueWatchHandler(val) {
      val.forEach((item) => {
        this.dataSource.concat(this.selectedTable.dataSource).forEach((data) => {
          if (data[this.valueKey] === item) {
            pushIfNotExist(this.selectedRowKeys, data[this.rowKey])
          }
        })
      })
    },

    queryOptionsByValue(value) {
      if (!value || value.length === 0) {
        return
      }
      // 判断options是否存在value，如果已存在数据就不再请求后台了
      let notExist = false
      for (let val of value) {
        let find = false
        for (let option of this.options) {
          if (val === option.value) {
            find = true
            break
          }
        }
        if (!find) {
          notExist = true
          break
        }
      }
      if (!notExist) return
      getAction(this.valueUrl || this.listUrl, {
        // 这里最后加一个 , 的原因是因为无论如何都要使用 in 查询，防止后台进行了模糊匹配，导致查询结果不准确
        [this.valueKey]: value.join(',') + ',',
        pageNo: 1,
        pageSize: value.length,
      }).then((res) => {
        if (res.success) {
          let dataSource = res.result
          if (!(dataSource instanceof Array)) {
            dataSource = res.result.records
          }
          this.emitOptions(dataSource, (data) => {
            pushIfNotExist(this.innerValue, data[this.valueKey])
            pushIfNotExist(this.selectedRowKeys, data[this.rowKey])
            pushIfNotExist(this.selectedTable.dataSource, data, this.rowKey)
          })
        }
      })
    },

    emitOptions(dataSource, callback) {
      dataSource.forEach((data) => {
        let key = data[this.valueKey]
        this.dataSourceMap[key] = data
        pushIfNotExist(this.options, { label: data[this.displayKey || this.valueKey], value: key }, 'value')
        typeof callback === 'function' ? callback(data) : ''
      })
      this.$emit('options', this.options, this.dataSourceMap)
    },

    /** 完成选择 */
    handleOk() {
      let value = this.selectedTable.dataSource.map((data) => data[this.valueKey])
      this.$emit('input', value)
      this.close()
    },
    /** 删除已选择的 */
    handleDeleteSelected(record, index) {
      this.selectedRowKeys.splice(this.selectedRowKeys.indexOf(record[this.rowKey]), 1)
      //update--begin--autor:wangshuai-----date:20200722------for：JSelectBizComponent组件切换页数值问题------
      this.selectedTable.dataSource.splice(this.selectedTable.dataSource.indexOf(record), 1)
      this.innerValue.splice(this.innerValue.indexOf(record[this.valueKey]), 1)
      console.log('this.selectedRowKeys:', this.selectedRowKeys)
      console.log('this.selectedTable.dataSource:', this.selectedTable.dataSource)
      //update--begin--autor:wangshuai-----date:20200722------for：JSelectBizComponent组件切换页数值问题------
    },

    customRowFn(record) {
      return {
        on: {
          click: () => {
            let key = record[this.rowKey]
            if (!this.multiple) {
              this.selectedRowKeys = [key]
              this.selectedTable.dataSource = [record]
            } else {
              let index = this.selectedRowKeys.indexOf(key)
              if (index === -1) {
                this.selectedRowKeys.push(key)
                this.selectedTable.dataSource.push(record)
              } else {
                this.handleDeleteSelected(record, index)
              }
            }
          },
        },
      }
    },
  },
}
</script>
<style lang="less" scoped>
.full-form-item {
  display: flex;
  margin-right: 0;

  /deep/ .ant-form-item-control-wrapper {
    flex: 1 1;
    display: inline-block;
  }
}

.j-inline-form {
  /deep/ .ant-form-item {
    margin-bottom: 12px;
  }

  /deep/ .ant-form-item-label {
    line-height: 32px;
    width: auto;
  }

  /deep/ .ant-form-item-control {
    height: 32px;
    line-height: 32px;
  }
}
</style>
